hi guys, looking to buy some bbs LM replica's and just need some help figuring out if these specs would be ok 18x8.5 front/18x9.5 rear, 45mm offset front and rear, lip size 1.25" front/2.5" rear, hub bore size 72.6mm
i am also wanting to lower the vehicle with H&R super sport springs

The 45 offset in the rear will force you to run a narrow 255/average 245 tire in the rear. The front offset is fine for a 225/narrow 235 tire. If you're ok with the "stretched" look in the rear, it should be a good looking setup.